The Kappa is a Japanese yokai or monster that has been a part of Japanese folklore for centures. It is usually depicted as a water imp that lives in rivers, lakes, and ponds. Kappa have a reputation for being mischievous and are often blamed for mishaps that occur near bodies of water.

Kappa have been a popular subject in Japanese art and literature and have been featured in a variety of stories ranging from children's tales to horror. In recent years, the kappa have been popular mascots for various products and events in Japan.